Patents by Inventor Darrell Hargrove

Darrell Hargrove has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D326807
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: June 9, 1992
    Assignee: Labor Saver Products, Inc.
    Inventor: Darrell Hargrove
  • Patent number: D328378
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: July 28, 1992
    Assignee: Labor Saver Products, Inc.
    Inventor: Darrell Hargrove